Abstract

Convolvulus arvensis Linn. (Convolvulaceae) was studied to determine the various parameters for pharmacognostical standards. The present investigation deals with the report on macro and microscopical, vein islet and vein termination numbers, palisade ratio, stomatal index (upper and lower surfaces of the leaf) and different chemical parameters. The present study reports some quantitative parameters needed for pharmacognostical quality, which might be helpful for future workers, pharmacologists and herbal practitioners involved in herbal medicines.

Key words: Convolvulus arvensis, pharmacognostic standards, palisade ratio, stomatal index.